Question

3-126. simplify each of the following expressions. homework help

a. 3 - 2·5

b. 7(4 + 3·2)

c. 10 - 6÷2·4 + 2

Explanation:

Part a:

Step1: Perform multiplication first

$2 \cdot 5 = 10$

Step2: Subtract the result from 3

$3 - 10 = -7$

Step1: Perform multiplication inside the parentheses

$3 \cdot 2 = 6$

Step2: Add the result to 4

$4 + 6 = 10$

Step3: Multiply by 7

$7 \cdot 10 = 70$

Step1: Perform division

$6 \div 2 = 3$

Step2: Perform multiplication

$3 \cdot 4 = 12$

Step3: Perform subtraction and addition from left to right

$10 - 12 + 2 = (-2) + 2 = 0$

Answer:

$-7$

Part b: